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Method and apparatus for cooling and/or deep-freezing materials implementing the injection of two cryogenic liquids

A low-temperature liquid, cooling method technology, applied in household refrigeration devices, preservation of meat/fish by freezing/cooling, applications, etc., can solve the problems of difficult distribution of cold spots, small output, limitations, etc., to avoid the effect of over-speed discharge

Inactive Publication Date: 2012-11-14
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] - The technology is usually limited to small mixers and small production volumes (typically less than 100 tons per year)
[0019] - As mentioned above, the technology is limited by a low freezing efficiency of about 36kcal / kg at 1.5bar
[0020] - is also characterized by the fact that the technology has the risk of cold spots and is therefore difficult to distribute

Method used

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  • Method and apparatus for cooling and/or deep-freezing materials implementing the injection of two cryogenic liquids
  • Method and apparatus for cooling and/or deep-freezing materials implementing the injection of two cryogenic liquids
  • Method and apparatus for cooling and/or deep-freezing materials implementing the injection of two cryogenic liquids

Examples

Experimental program
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Effect test

Embodiment Construction

[0068] figure 1 The lower part of a conventional prior art mixer (for example a meat mixer) is shown, which has two tanks 2 and 3, where a series of cryogenic fluids such as liquid nitrogen nozzles are used on each side of the device.

[0069] The figure symbolically shows the cryogenic liquid nozzle connected to the wall of the mixer by the reference number 5. The nozzle itself is advantageously as the figure 1 The conveying and supply rail 7 located above the nozzle as shown in the figure is supplied via a hose 6.

[0070] In order not to mess up the figure unnecessarily, the axis of the rotor shaft of the mixer is represented by a simple cross with the number 4, such as figure 1 Each groove of the mixer shown has an axis.

[0071] If you are examining the figure 1 It can be understood that the position of the nozzle along the wall of each groove (angle β) and the inclination angle of each nozzle with respect to the horizontal direction (angle α) in this case have favorable valu...

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PUM

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Abstract

The invention relates to a method for cooling materials, in particular food, in a cooling apparatus, the cooling being completely or partially carried out by contacting the materials with a cryogenic liquid. Said method is characterized in that the contacting is carried out by means of the injection of two cryogenic liquids, nitrogen and CO2. The liquid nitrogen and the liquid CO2 are injected either separately, into at least two injection points of the apparatus, or by mixing both cryogenic fluids at the injection point. The invention is of use if the apparatus being utilized is a mixing, batch mixing, or grinding chamber, with the injection being carried out into the body of the material in the bottom portion of the chamber.

Description

Technical field [0001] The present invention relates to the field of methods for cooling and / or deep freezing the contents of a chamber using cryogenic liquid. The invention particularly relates to the cooling of food in the following types of devices: tunnels, mixers, mixers, grinders or kneaders, churns, drums ("rollers" in written language), etc., the contents of which are then It can be solid or pasty-as in the case of meat, or it can be liquid. Background technique [0002] Although the situation of foods will be described in more detail below, the present invention should never be limited to their situation. The present invention relates more generally to many other products, and especially chemicals, biological products, and stem cells that undergo such cryogenic cooling operations. Wait. [0003] In the following, the situation of the grinding agitator is described in more detail in order to better understand the concept of the problem faced. [0004] In such applications ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B4/09A23L3/375F25D3/11
CPCF25D3/12F25D3/10A23B4/09A23L3/375
Inventor F·库赞N·法松W·弗雷德里克P·科瓦卢斯基M·佩罗特米诺
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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